/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/

/**
 * This file is modified from Qt example
 * by Ninsun 2010-06-28
 *
 * Added/Modified:
 * add [editor members] ...
 */

#ifndef CODEPAD_H
#define CODEPAD_H

#include <QPlainTextEdit>
#include <QObject>
#include "highlighter.h"

QT_BEGIN_NAMESPACE
class QPaintEvent;
class QResizeEvent;
class QSize;
class QWidget;
class MainWindow;
QT_END_NAMESPACE

class LineNumberArea;

//![codeeditordefinition]
class CodePad : public QPlainTextEdit
{
    Q_OBJECT

public:
    CodePad(QWidget *parent = 0);
    ~CodePad();

    //![line number members]
public:
    void lineNumberAreaPaintEvent(QPaintEvent *event);
    int lineNumberAreaWidth();

protected:
    void resizeEvent(QResizeEvent *event);

private slots:
    void updateLineNumberAreaWidth(int newBlockCount);
    void highlightCurrentLine();
    void updateLineNumberArea(const QRect &, int dy);

public:
    QWidget *lineNumberArea;
    int numWidth;
    bool lineNumberEnable;
    bool currentLineEnable;
    //![line number members]

    //![highlighter]
public:
    Highlighter *highlighter;
    //![highlighter]

    //![editor members]
public:
    int open(const QString &fileName);
    int saveAs(const QString &fileName);
    int save();

    QString getTabName() const { return tabName; }
    void setTabName(const QString &tabName) { this->tabName = tabName; }
    QString getFileName() const { return fileName; }
    bool getChanged() { return isChanged; }
    void setChanged(bool change) { isChanged = change; }

    void setCodec(int codec) { this->codec = codec; }
    int getCodec() { return codec; }

private:
    QString fileName;
    QString tabName;
    bool isChanged;

public slots:
    void updateTextEdit();

public:
    int codec;
private:
    QByteArray encodedData;
    QString decodedStr;
public:
    void setup();
private:
    MainWindow *wnd;
    //![editor members]
};
//![codeeditordefinition]

//![extraarea]
class LineNumberArea : public QWidget
{
public:
    LineNumberArea(CodePad *editor) : QWidget(editor) {
        codeEditor = editor;
    }

    QSize sizeHint() const {
        return QSize(codeEditor->lineNumberAreaWidth(), 0);
    }

protected:
    void paintEvent(QPaintEvent *event) {
        codeEditor->lineNumberAreaPaintEvent(event);
    }

private:
    CodePad *codeEditor;
};
//![extraarea]

#endif // CODEPAD_H
